alphainnoTec BWP 310 User manual

830130GB/150111 - We reserve the right to make technical changes - 1
Alpha-InnoTec GmbH
Industriestrasse 3, D-95359 Kasendorf
Tel.: [phone]
Fax.: [phone]
www.alpha-innotec.de
e-mail:[email protected]
INSTRUCTION MANUAL
with Product Information
Domestic Hot Water Heat Pump
BWP 310
With control
Ventronik BWP
This instruction manual is part of the scope of supply and must be handed over to the user
of the plant. Please keep safely and show to competent persons, if necessary..

TABLE OF CONTENTS
Page
Product description 3
Scope of supply / Accessories 3
Prescriptions / Safety regulations 4
Transport / Assembly 5
Connections 6
Start-up 8
Maintenance 9
Errors / Trouble shooting 10
Environment 11
Refrigeration circuit 12
Hydraulic schematic 13
Capacity / Construction 14
Technical data 15
Control Ventronik BWP 16
Connection diagram 19
EU-Statement of Conformity 20
Guarantee Conditions 21
2-We reserve the right to make technical changes - 830130GB/150111

830130GB/150111 - We reserve the right to make technical changes - 3
Use of the domestic hot water heat pump
The domestic hot water heat pump serves exclusively for
heating domestic hot water within the specified operating
temperature limits.
Description of the domestic hot water heat pump
BWP 310 is a ready for connection heating appliance
which basically comprises the casing, the components of
the refrigeration circuit, the air circuit and the water circuit
as well as all the necessary control systems and monito-
ring systems for automatic operation.
The device is provided with a heat exchanger with appro-
ximately 0,8 m2 exchanger surface for the connection of
an additional heat generator such as a boiler, a solar in-
stallation etc.
Supported by electric power, the BWP 310 uses the heat
of the ambient air for the domestic water heating. The sto-
rage includes an immersion sleeve to be used for an ex-
ternal boiler thermostat respectively a sensor (diameter 6
mm) of an external regulation. The device is serialised with
an electric heating element (1,0 kW).
Coolant circuit
The coolant circuit is a closed system using the halide
CFC-free coolant R134a as energy source.
The heat is transferred from the air at a low evaporating
temperature (in the exchanger - evaporator) to the coolant.
The compressor sucks in the vaporized coolant and com-
presses it to achieve a higher pressure-/temperature level.
The coolant enters the condenser, where the heat gathe-
red in the evaporator and a part of the gathered compres-
sor energy is transferred to the domestic hot water. After-
wards, a throttle device (expansion valve) relieves the high
condensation pressure up to the evaporation pressure
and, in the evaporator, the coolant can again take in heat
transferred from the ambient air.
Functioning of the domestic hot water heat pump
The control unit starts the compressor as soon as there is
any need of hot water. The compressor operates as long
as the whole tank has achieved the requested temperatu-
re. Normally, the domestic hot water pump heats enough
domestic hot water to satisfy the needs of a family.
In case the domestic hot water pump cannot satisfy the
domestic hot water needs, an electric heating element
installed in the tank can be switched on by the Ventro-
nik BWP to increase the quantity of domestic hot water.
The electric heating element can be set to the requested
domestic hot water temperature (use the electric heating
element only if needed, because it consumes more energy
than the compressor). The electric heating element must
be activated manually at the control unit.
Scope of supply
● Domestic hot water pump with control unit.
Including plate and instruction manual with product infor-
mation.
Accessories
● Air duct connectors
● Temperature sensor solar / wooden boiler
● Anode
BWP 310
Product Description Scope of Supply/Accessories

4-We reserve the right to make technical changes - 830130GB/150111
BWP 310
Prescriptions / Safety Regulations
● The construction and the design of the domestic hot wa-
ter pump have been carried out in accordance with all
EU directives.
(see also EU Statement of Conformity)
Works at the domestic hot water pump must on
all accounts be carried out by competent per-
sons (DIN EN 378) in accordance with the acci-
dent prevention regulations and the following
regulations:
● The competent person must provide for the coolant to
be removed from the coolant-bearing parts as far is this
necessary to ensure the safe execution of maintenance
works and servicing.
● The competent person must provide for the risk of fire
when doing maintenance works or servicing with open
coolant circuit, in particular when working with an un-
shielded flame (soldering, welding etc.).
● Consider the accident prevention regulations in accor-
dance with (VBG 20).
● When doing works at the BWP 310, all electric circuits
must be switched off (unplug the power plug).
● The electrical installation of the BWP 310 must be car-
ried out by competent persons and in accordance with
all EU-standards and IEE* regulations and the regulati-
ons of the local energy supply companies.
*IEE – Institute of Electrical Engineers
● Only the use of drinking water quality is admissible (in
accordance with the Drinking Water Ordinance). Consi-
der the material compatibility for the whole water circuit.
Too high water pressure requires the use of a pressure
reducer.
● All drinking water supply points must be executed in
accordance with DIN 1988.

830130GB/150111 - We reserve the right to make technical changes - 5
BWP 310
Transport / Assembly
Storage and transport
of the domestic hot water heat pump
Basically, the domestic hot water heat pump must be in
packed condition and standing up straight without water
filling for storage or transportation. For transportation for
short ways, the heat pump may be inclined by maximum
45°. Ambient temperatures of -20 to +70°C are admissible
for the transportation and for the storage.
Transport with the lift truck
For the transport with the lift truck, the BWP 310 must be
secured to the pallet. The lifting speed must be kept low.
Due to the top-heaviness, the domestic hot water heat
pump must be secured against falling down.
Positioning of the domestic hot water heat pump:
The heat pump must be positioned on a flat surface to avoid
damage.
Transport with the hand truck
● Secure the device on the hand truck against slipping
down.
● The hydraulic connections must on no account be used
for lifting purposes.
● Care for the hand truck not to damage the hydraulic con-
nections and the front panel.
Site of installation
The location of the domestic hot water heat pump must
fulfil the following criteria:
The domestic hot water heat pump must only be
installed in a frost-free location.
The location must comply with the following require-
ments:
●Room temperature between +8°C + 1,5K and +35°C (for
heat pump operation).
●Good thermal insulation to the adjacent rooms.
●Condensate overflow.
●The air must not be too dusty.
●The underground must be sustainable (approx. 500 kg).
●Room size for recirculating air operation minimum 20m3
Consider a minimum lateral distance of 0,5 m to the left
and to the right to ensure trouble-free operation of the do-
mestic hot water heat pump as well as sufficient clearance
for access for servicing. Clearance above the domestic hot
water heat pump at least 0,30 m.
Installation
● Remove the plastic protective cover from the pallet.
● Remove the protective angles.
● Remove the transportation locks from the pallet.
● Take the device down from the pallet to position it.
● Align the device in vertical position by adjusting the
stands.
Connection of the water conduits
The nominal width of the conduits for on-site installation
must be specified on-site, considering the existing water
pressure and the pressure loss to be expected in the pipe
system.
The water side installation must be carried out in accor-
dance with DIN 1988.
The water conduits may be executed in solid or flexible
construction. Consider the corrosion behaviour of the used
materials in the pipe system to avoid damage.
Just like all types of pressure tanks, also the heat pump
domestic hot water tank must be provided with a type-ex-
amination tested safety valve and a non-return valve (not
delivered with the unit).
The cold water supply pipe will be on the rear side at
ground level (3/4” AG).
The maximum operating pressure is 10 bar, the maximum
operating temperature is 65°C.
If necessary, a pressure reducing valve and a potable wa-
ter filter should be installed in the supply pipe.
When preparing the on-site piping, any contami-
nations in the pipe system must be avoided (the
pipes should be flushed before connecting the
domestic hot water heat pump)!
When connecting the on-site pipes to the scre-
wed joints, the pipes must be secured against
torsion with a spanner!
If no circulating pipe is connected to the heat
pump, the connection point must be sealed ac-
cordingly!

6-We reserve the right to make technical changes - 830130GB/150111
BWP 310
Connections
Connection of the condensed water tubes
Due to the cooling down of the air in the evaporator, con-
densed water is separated. The condensate overflow (15
mm inside diameter) at the rear side of the heat pump
must be led away from the heat pump with plastic pipes
to ensure the discharge of the condensed water. The con-
densed water quantity amounts up to 0,5 l/h, depending on
the air humidity.
A trap (siphon) is absolutely necessary. The condensed
water discharge must not be connected directly to a chan-
nel interface as the ammonia gas in the channel could af-
fect the heat exchanger plate fins and components of the
heat pump.
Electrical connection
The domestic hot water heat pump is wired ready for con-
nection. Just plug the power plug in the socket fitted on-
site.
Air connections
INTAKE AIR
The intake air must not contain any aggressive substances,
(Ammonia, sulphur, chlorine etc.) which could destroy me-
chanical parts!
AIR CONNECTION
When using heat pumps in connection with ducts, the op-
tional air duct connector (accessory) is necessary. Use
plain ended pipes for the intake duct and the exhausted air
duct to keep the air resistance low.
Consider the pressure loss of the pipes and the compres-
sion of the fan (see technical data).
The air ducts close to the heat pump must be laid hori-
zontally respectively slightly off-peak to the intake- and ex-
hausted air ducts to avoid the discharge of condensed wa-
ter. Ducts leading outdoor should be equipped with check
valves (with low resistance) to prevent cold air from co-
ming in during the winter time when the heat pump stands
still. We recommend to insulate the ducts completely up to
the heat pump (less sound pressure level, insulation). The
supply of fresh air from outside makes sense only at tem-
peratures > +15°C (see application limits of the domestic
hot water heat pump).
Air connections
For inserting the air duct connectors (accessories), the
cover of the casing of the BWP 310 must be opened (20
crosshead screws). Afterwards, the air duct connector can
be installed.
Consider sufficient clearance above the domestic hot wa-
ter heat pump for recirculating air operation or operation
without pipe systems.
Eventual connection of a heat exchanger
The heat pump includes a heat exchanger enamelled out-
side with a heating surface of 0,8 m2. Connection with a
¾” pipe thread. The dip tube bag for the thermostat of the
heat pump may also include sensors for the control of the
heat output of the heat exchanger (for example fuel oil or
gas boiler operation).
Sensor diameter 6 mm.
Cover plate with louvre (condition when delivered).
Cover plate with air duct connector (accessories).)
Blow out
Intake

830130GB/150111 - We reserve the right to make technical changes - 7
BWP 310
Connections
The water connections are on the rear side of the heat
pump:
Condensed water tube
Central at the front side, under the front panel:
Heating element + sensor + anode
Cold water inlet Domestic hot
water-
circulation
Domestic hot
water outlet
Sensor/Immer-
sion sleeve
Anode Heating element

8-We reserve the right to make technical changes - 830130GB/150111
BWP 310
Start-up
Operation of the BWP 310 is admissible only
with a filled tank!
Switch off the system before opening the door
of the BWP 310!
Check whether the plug main board/connecting
line to the operator panel is plugged in correctly
when starting up the system!
Domestic hot water circuit
Demands on the domestic hot water circuit
On the domestic hot water side, the following material may
be included in the water circuit:
- Copper
- Stainless steell
- Brass
- Plastics
Material incompatibilities might eventually cause corrosion
damage, depending on the material used in the domestic
hot water circuit (provided by the customer). This applies
particularly to the use of zinced and aluminiferous materi-
als.
Start-up
of the domestic hot water system
- Fill and vent the domestic hot water circuit at the exter-
nal connection (open the domestic hot water taps at the
highest point, until there is no more air left.
- Test the whole domestic hot water circuit for leaks.
- Connect the heat pump to the power supply.
Test the screw connections at the drinking wa-
ter supply points of the domestic hot water heat
pump for leaks after the start-up!
Coolant circuit
The domestic hot water heat pump is ready for use. The
coolant circuit is also ready for operation. The temperature
controller automatically starts the heat pump and controls
the domestic hot water temperature.
Heat exchanger operation
1) Boiler
The heat exchanger operation applies if the domestic wa-
ter heating (for example in the winter) is supposed to be
settled by the second heat exchanger.
During this operating mode, the heat pump is switched off
(fan stage = 0). The domestic hot water temperature is
controlled by the temperature controller of the boiler.
Summer activity BWP 310 = fan stage 1
Winter activity wooden boiler = fan stage 0
During the boiler operation, an additional sensor must be
installed in the hot water heater (approach from the boi-
ler).
The maximum domestic hot water temperature in the heat
pump must not exceed max. 65°C.
If the boiler supports the BWP 310 operation, the tempe-
rature controller of the domestic hot water temperature at
the boiler must be set approximately 5K lower than the
domestic hot water temperature at the BWP 310 (P3). This
means that the boiler operates in parallel to the BWP 310
in case of large domestic hot water requirements.
Balance the sensor values when starting up the
systems.
2) Wooden boiler respectively solar system
The operation of solar systems respectively wooden boi-
lers applies if the domestic water heating is supposed to
be completed additionally. The sensor TS (T9 in the refri-
geration plan; accessories) measures the temperature. If
the temperature exceeds the domestic hot water tempera-
ture, the control Ventronik BWP may switch on a charge
pump.
The hysteresis of the temperature can be set between 0
to 5K.
The max. domestic hot water temperature to be achieved
is 60°C.
Once the storage temperature (60°C) has been achieved,
the temperature difference control will be deactivated.
Recommendations for low energy consump-
tion
The BWP 310 should not be operated over 45°C in order
to achieve a high power coefficient and low losses,
The temperature controller values should be increased
only exceptionally, just as manual setting of the heating
element.
Recommendations for fan operation
Reduce the number of revolutions of the fan for silencing
during recirculating air operation without ducts.
For systems with duct systems , a high number of revoluti-
ons of the fan is necessary.

830130GB/150111 - We reserve the right to make technical changes - 9
BWP 310
Maintenance
For optimal operation of the BWP 310, consider the follo-
wing:
Pull the mains plug before opening the dome-
stic hot water heat pump and pay attention to
the fan!
Test the water system every few days for leaks and the
condensate overflow for obstructions after the first instal-
lation.
Anode:
To protect it from corrosion, the enamelled domestic hot
water tank is provided with a magnesium anode installed in
the tank with a ¾” plug connection. The estimated service
life of the anode is 2-5 years. Nevertheless, you should
regularly check whether the anode is still intact, i.e. the
anode should be tested every two years and replaced in
case of corrosion or if the diameter is only 6-10 mm.
For checking the anode, switch off the system and disas-
semble the front door. It is necessary to let out the water of
the domestic hot water tank before screwing off the front
anode. For this, it is necessary to cut off the cold water
inlet and to put a tube on the drain valve for leading the
water to the next outlet. When letting out the water from
the tank, open a domestic hot water tap in order to avoid
a vacuum in the tank. As soon as the tank is empty, screw
off the anode to check it.
After having re-installed the anode, close the drain valve,
re-open the cold water supply, refill the tank with water and
vent it. Once the tank is filled again and door is re-assem-
bled, switch on the power supply.
Fan:
For servicing the fan, it is enough to clean the evaporator
at regular intervals respectively as needed. Screw off the
plate. In case there are air duct connectors at the device,
dismantle the tubes atop of the unit and screw off the cover
plate. Use a brush or a bottle cleaner to clean the fan. Do
not remove the balancing weights at the fan to prevent a
higher noise level due to an unbalance as well as prema-
ture wear of the fan.
● Risk of injury by sharp-edged fins.
● The fins must not be damaged
Condensate tray and condensate overflow:
When cleaning the fan, the condensate tray must be clea-
ned at the same time. Fill water in the tray and test whether
it runs off smoothly. If not so, the drain must be cleaned.
At the same time, check whether the fins of the evaporator
are clean.
Safety valve:
Integrated in the domestic hot water tank assembly, the
fitter has installed a safety valve at the cold water supply
pipe. The safety valve protects the tank against overpres-
sure when the domestic hot water expands during the he-
ating. The non-return valve installed in front of the safety
valve in the cold water pipe prevents the water from flo-
wing back in the cold water pipe. Due to this, the pressure
in the tank increases up to the maximum pressure of the
safety valve. Then the safety valve opens and the excess
water flows off. If the safety would not be opened, the tank
would burst.
To ensure the safety valve works correctly, it must be che-
cked several times a year.
For this, press the spring-loaded lever at the safety valve
and control whether water leaks from the valve.
Damage caused by a blocked safety valve is not covered
by our guarantee conditions.

10 -We reserve the right to make technical changes - 830130GB/150111
BWP 310
Errors / Trouble Shooting
The heat pump does not work!
Check the following:
● The plug is plugged in correctly?
● The power socket is live?
● The air intake temperature is > +8°C + 1,5K?
● The heat pump has not been shut off by the
temperature controller?
● The domestic hot water temperature is
> 55°C?
● The plug connection line main board /
operator panel is plugged in correctly?
If the above questions cannot establish the error, please
contact your fitter or the after sales service.
Safety devices
The domestic hot water heat pump is provided with the
following safety devices:
High temperature limiter (HD)
The high temperature limiter protects the heat pump
against inadmissibly high operating pressure in the refri-
geration cycle. In the event of fault, the high temperature
limiter (19 bar) switches off the heat pump. The heat pump
will be switched on again by manual reset of the high tem-
perature limiter. For this, dismantle the screen, take off the
facade: NOTE – do not break away the control line!
For RESET push the red
pin
Safety temperature limiter for the
heating element (STB)
The safety temperature limiter protects the domestic hot
water system against an inadmissible rise of temperature
during heating operation. The safety temperature limiter is
attached to the heating element. The sensor is fitted in the
immersion pipe of the heating element. The heating ele-
ment will be switched off as soon as the set value (90°C)
is exceeded. It is not possible to switch on the heating ele-
ment again before the domestic hot water temperature has
fallen below 90°C. For this, push the reset button on the
top side of the thermostat. Dismantle the screen, take off
the facade: NOTE – do not break away the control line!
For RESET push the small
white pin

830130GB/150111 - We reserve the right to make technical changes - 11
BWP 310
Environment
Shut-down
To do:
● Switch off the domestic hot water heat pump
● Cut off completely the potable water line(TKW,
TWW; TZW) and drain the domestic hot water
tank completely.
Environment demands
When servicing or shutting down the BWP 310, consider
the environmental demands referring to recycling, reutili-
sation and disposal of operating materials and compon-
ents in accordance with DIN EN 378.

BWP 310
Refrigeration - / hydraulic schematic
12 -We reserve the right to make technical changes - 830130GB/150111
Verdichter
Hochdruckpressostat
HP
Sonnenkollektor/
Holzkessel
Verdampfer
Brauchwarm-
wasserspeicher
Verflüssiger
am Speicher
Wasserwärme
-tauscher
T8
T5
T6
T9
T7
KvVv
T5: Vor Verdampfer
T6: Verdampfer
T7: Speicher oben
T8: Speicher unten
T9: Sonnenkollektor (Zubehör)
Luft
MA4
Luft
Domestic hot
water tank
Evaporator
High pressure control
Air Air
Compressor
Solar collec-
tor /wooden
boiler
Condenser at
the tank
Water heat
exchanger

BWP 310
Hydraulic schematic
830130GB/150111 - We reserve the right to make technical changes - 13
Heizkessel
Heizkreis
Heizungspumpe
Fühlerleitung
1: Absperrventil
2: Druckminderventil
3: Prüfventil
4: Rückflussverhinderer
5: Manometeranschlussstutzen
6: Entleerungsventil
7: Membran Sicherheitsventil, Abblasedruck 6,0 bar
14
3
21
57
Kaltwasseranschluss
Entleerung
Boilerladepumpe
Entlüftung
TKW nach
DIN 1988
6
Brauchwarmwasser-
Wärmepumpe
TWW, DIN 1988
TZW, DIN 1988
Ventil an tiefster Stelle
für Entleerung Behälter
Trinkwasserfilter gem. DIN 1988 in Hausanschlussleitung
When using the domestic water heat pump in connection with a boiler or a solid fuel boiler, make sure
the maximum domestic hot water temperature will not exceed +65°C and the maximum admissible pres-
sure in the additional heat exchanger of the domestic hot water heat pump will not exceed 3 bar!
Heating pump
Heating circuit
Domestic hot water
heat pump
Ventilation
Boiler pump
Boiler
Sensor line
Discharge
Cold water supply
Valve at the lowest point
for tank discharge
1: Gate valve
2. Pressure relief valve
3 :Check valve
4: Non-return valve
5: Pressure gauge connector
6: Drain valve
7: Membrane safety valve, vent pressure 6,0 bar
Potable water filter in accordance with DIN 1988 in house service connection.
TKW acc.
to DIN 1988

BWP 310
14 -We reserve the right to make technical changes - 830130GB/150111
Capacity
Within 24 hours, the BWP 310 can heat a domestic hot water
volume of approximately 380 litres to 55°C. The actual quantity
depends on the heat source temperature, the inlet temperature
of the fresh water and the type of extraction. An additional hea-
ting element with a capacity of 1 kW can be connected to cover
peak-periods.
The energy consumption of the BWP 310 for domestic water he-
ating is only approximately 30% of the energy consumption for a
directly heated tank.
Accessories
Air duct connector
Top view:
Front view:
1: Intake
2: Blow out
3: Regulating board
4: Condensate overflow connection
5: Compressor
6: 290 litres tank
7: Anode top side
8: 1 kW heating element
9: Water heat exchanger
10: High pressure control with manual
reset
11: Cold water supply ¾” AG
12: Domestic hot water supply ¾” AG
13: Connection heating element ¾”
AG (inlet)
14: Connection heating element ¾”
AG (outlet)
15: Domestic hot water circulation
¾” AG
16: Tank cleaning flange
Sockel
Top
3
6
5
7
8
4
9
10
11
12 15
13 14
15
300 664
1.870
250
600
250
140
150
626
150
600
447
217
266
50
16
720
21
588
346 120
622
125
531
28 28
30
35
2 x sheet connectors Ø160mm with lip seal
Blow out
Intake
Pedestal

BWP 310
Technical data
830130GB/150111 - We reserve the right to make technical changes - 15
Conformity CE
Installation Inside
Protection fan IP 44
Size (H x W x D) excl. connectors 1870 x 600 x 664
Weight without water / weight with water 210 kg / 500 kg
Voltage, cable + plug with earthing contact, length 2m 230 V, NPE, protection 16A-C
Performance data
Heating capacity (A 15 / W 15-45) 1,6 kW
Power consumption (A 15 / W 15-45) 0,52 kW
Power coefficient (A 15 / W 15-45) 3,1
Application limits
Temperature limit min. evaporator (air temperature) +8 ±1,5K °C
Temperature limit max. evaporator (air temperature) +35°C
Heating element 1 kW
Domestic hot water temperatures
Temperature max. during heat pump operation +55°C
Temperature max. during heat pump operation and heating element +65°C
Temperature max during heat exchanger operation (wooden boiler) +60°C
Compressor
Number / power levels 1 / 1
Type of coolant / capacity R 134a / 1,1 kg
Evaporator
Number 1
Type / material Laminar pipe / Cu,Al
Water tank
Material / hardening Steel / special enamelling
Nominal volume / admissible operating pressure 290 l / 10 bar
Tank protection (1 bottom, 1 front)
2 magnesium anodes 3/4“
Heat exchanger for additional heating
Admissible operating pressure 3 bar
Admissible operating pressure of the heating agent in the heat ex-
changer
65 °C
Surface of the heater coils (smooth bore pipe) 0,8 m²
Air flow
50% fan speed and 25 Pa 135 m³/h
100% fan speed and 100 Pa 280 m³/h
Condensate overflow
Plastic tube, on the rear side, approx. 2 m Ø 15 mm (inside)

Control Ventronik BWP
+
The domestic hot water heat pumps are supplied with the con-
trol Ventronik BWP which allows easy setting of the operating
parameters.
Standard display is the domestic hot water temperature.
Operator panel
Operating menu
When pressing one of the three lower keys over 2 seconds, the
set point of a menu item will be displayed. The set point can
be changed by pressing the arrow keys ( arrow up) ( arrow
down) at the same time. Then the display returns to the dome-
stic hot water temperature.
P3: Operating thermostat
Operating thermostat
The requested temperature of the domestic hot water
being heated by the heat pump can be set between 0°C
and 55°C.
Factory setting: 52,0°C
P5: Electrical heating element
Push electrical heating element + operating
thermostat
The requested domestic hot water temperature can
be set between 0°C and 65°C. The electrical heating
element heats only the upper half of the tank meanwhile
the heat pump goes on heating the lower part of the
tank.
Factory setting: 50,0°C
Display
The display shows the following temperatures.
T4: Unassigned
T5: Before evaporator
T6: Evaporator
T7: Domestic hot water top
T8: Domestic hot water bottom
T9: Solar collector (accessories)
Push the keys, set to T5 etc. and let go, after 2 seconds
the requested value will be displayed. The position of the
sensors T5-T9 is shown in the refrigeration-/hydraulic
schematic.
P1: Setting of the fan power stages
Keep the key pressed. Then, set the requested stage
with the arrow keys:
Standby (Stage 0), Automatic (Stage 1), Fan conti-
nuous operation (Stage 2) and timer-controlled con-
stant operation (Stage 3).
Stage 0: The heat pump is switched off now, only the
control is active.
Stage 1: The fan is running only when heating dome-
stic water.
Stage 2: The fan keeps always running, even without
domestic water heating (= compressor OFF)
Stage 3: (Party operation): during a set time-period,
the fan is running also without domestic water heating
(= compressor OFF)
Factory setting: Stage 1
P2: Heating element ON
Push heating element
The heat pump supply includes an electrical heating
element for the heating of domestic hot water. This
press switch can give the signal for switching on the
electrical heating element if needed.
When setting the set point to 1, the heating element will
be switched on if needed.
When setting the set point to 0, the heating element will
not be switched on even if needed.
Factory setting: 0
16 -We reserve the right to make technical changes - 830130GB/150111
Functioning
The refrigeration- and hydraulic schematic shows the configura-
tion of the sensors and the control board shows the relay output
as well as the other outlets for the connection of fans and the
operator panel.
Water heating:
When taking hot domestic water from the tank, cold water will
be refilled at the bottom of the tank. A sensor measures the
bottom temperature of the tank and switches on the compressor
as soon as the temperature has fallen over 5°C below the set
temperature. As soon as the water has achieved the set tem-
perature again, the compressor will be switched off. When the
compressor is operating, the fan is running at the same time,
blowing air through the evaporator.
Fan operation:
By selecting stage 2 or stage 3, the fan will run continuously
even though the compressor has been switched off. This ap-
plies if the BWP 310 will be used as exhaust air heat pump for
the wet rooms of the apartment.

High pressure control
A high pressure control switching off the compressor at too high
pressure is included in the compressor. The high pressure con-
trol makes sure the compressor will not exceed the application
limits. The reset switch must be operated manually as soon as
the error has been established.
As soon as the high pressure control has been activated, the red
LED is flashing until the reset switch has been operated.
Preferably lower the water temperature by 2-3°C to prevent the
high pressure control from being activated again.
Operating menu
The Ventronik BWP will be supplied with factory-settings to allow
the commissioning of the system without prior adjustments of the
operating menu of the system.
The factory-setting is only a basic setting which can be adapted
to the demands, requests and conditions of the respective apart-
ment in order to achieve optimal operating conditions and the
maximum possible efficiency of the system.
Change of operating data
Press the arrow keys at the same time
(arrow up), (arrow down),
to reach the operating menu.
Now, the first item E0 of the operating menu is displayed. If no
switch is activated over 1 minute, the screen will be reset to the
normal display.
With (arrow up) and (arrow down) you will reach the
requested menu item.
A set point can be changed by pressing at the same time
(operating thermostat) and one of the arrow keys /
If no switch is activated over 15 seconds, the screen will be
reset to the normal display.
Description of the menu items
E0: Factory-setting
If the system does not work as requested with the adjusted
set points and if the cause of the malfunction cannot be found,
proceed as follows: write down all the settings of the set points.
Put the set point to 1 and confirm by OK. Then, all the set points
will be reset to the factory-setting.
Factory-setting: 0
E8: Thermal disinfection ON/OFF
IIf this parameter is set to 1, the Ventronik BWP will heat the wa-
ter once a week to 65°C with the heating element, even though
P2 is set to 0.
Factory-setting: 0
E9: Operation in cold surroundings ON/OFF
If the heat pump is installed in the cellar with cold supply air, the
Ventronik BWP can be set so that below a certain air temperature
the electric heating element starts operating in order to protect
from freezing. This function will be activated by setting the set
point to 1.
If the setting is 0, the heat pump will not be switched off, no mat-
ter how the setting of P5 is.
Factory-setting: 1
E10: Operation in cold surroundings
If the set point in E9 is set to 1, you can define the temperature
from which on the compressor will no more be used.
The set point can be selected from 0-10°C.
The heating element starts working automatically below the set
temperature, no matter how the setting of P2 is.
We recommend +8°C to assure a seamless change-
over from HP-operation to heating element operation.
Factory-setting: 8°C
E16: Min. air quantity
This value specifies the lowest possible speed of the fan during
operation.
Note: by setting a too high value, the heat discharge via the
evaporator may be overloaded in case of breakdown of the
high pressure control. The value should not be set higher than
necessary to assure a low air flow through the evaporator.
Setting between 0-100%.
We recommend to keep the factory-setting (0).
E17: Party operation
Stage 3 (P1:3) allows to set the system so that after a couple of
hours it will automatically be reset to stage 2 (P1:2). For this, set
the set point to 1.
If you set the set point to 0, the system runs in stage 3 until you
switch manually to another stage (see “P1: Setting of the fan
power stages”).
Factory-setting: 0
E18: Number of hours for ventilation party operation
Setting of the number of hours running constantly in stage 3 be-
fore the automatic reset to stage 2.
The value can be set from 1-6 hours.
Factory-setting: 3 hours
Control Ventronik BWP
830130GB/150111 - We reserve the right to make technical changes - 17

Control Ventronik BWP
E20: Wooden boiler/solar collector hysteresis
In case a wooden boiler respectively a solar collector is involved,
you can define from which temperature difference between the
water temperature of the solar collector and the operating ther-
mostat of the domestic hot water tank on the loading pump of the
solar collector is supposed to start.
Once the set temperature of the operating thermostat has been
reached, the loading pump of the solar collector does not start,
even though the temperature difference is bigger than the set
value.
The set point can be set from 0-5°C.
The maximum domestic hot water temperature to be reached
with the wooden boiler/solar collector is 60°C.
E21: TX-value
To avoid too high working pressure in the refrigerating machine,
the output of the system must be decreased during the last
phase of the heating period. This parameter specifies when to
start lowering the water temperature.
This parameter can be set from 0-55°C.
We recommend 5K under the value of P5.
E23: Tmop-value
This parameter specifies the maximum permissible evaporating
temperature. This avoids overloading of the coolant circuit due to
too high ambient temperature.
The value can be set from 0-20°C.
Applies only if the machine is operated with outside-air.
E25: Fan stage 2 (stage 2 – P1:2))
If a long-time ventilation of the house is requested, you can
switch the fan to another stage. Now, the fan will keep on running
up to the change to another stage, regardless of the domestic hot
water needs. This parameter specifies the requested speed of
the fan when selecting stage 2 (P1:2). Note: this setting will also
define the maximum fan speed for stage 1 (P1:1).
A speed from 0-100% can be selected.
Do not set a value under 70%.
E26: Fan stage 3 (stage 3 – P1:3)
If an elevated ventilation of the house for a certain time is re-
quested, you can change the fan to stage 3 (P1:3). Now, the fan
will keep on running during the defined hours, regardless of the
domestic hot water needs. Afterwards, it will be reset to stage 2
(P1:2). This menu item specifies the speed at which the fan is
supposed to run during the defined time period.
A speed from 0-100% can be selected.
We recommend to keep the factory-setting at 100%.
E45: dT-Air
This parameter defines the lowest cooling down of the air desired
during the water heating. The Ventronik BWP controls the fan
speed, so that the air will be cooled down exactly to the selected
temperature. In case it is necessary to go on heating the system
for technical reasons, the value of stage 2 (P1:2) will be over-
driven automatically.
dTair and the air quantity/fan-speed directly depend on each
other: smaller dTair means bigger air quantity. Bigger dTair means
smaller air quantity, i.e. dTair must be decreased to achieve a
higher fan-speed.
Consider that a high fan-speed means higher energy consump-
tion.
We recommend to keep the factory-setting (5).
Set points
Factory-setting Date Date
E0: Factory-setting 0
E8: Disinfection ON/OFF 0
E9: Operation in cold surroundings ON/OFF 1
E10: Operation in cold surroundings 8
E16: Min. air quantity 0
E17: Party operation 0
E18: Hours for ventilation party operation 3
E20: Boiler/solar collector hysteresis 5
E21: TX-value 45
E23: Tmop-value 15
E25: Fan stage 2 100
E26 Fan stage 3 100
E45: dT-Air 5
18 -We reserve the right to make technical changes - 830130GB/150111

830130GB/150111 - We reserve the right to make technical changes - 19
Compressor
Connecting line to the operator panel
BWP 310
Connection Diagram
(Version 230 V AC)
Solar / wooden
boiler loading pump,
230 V, max. 600 W
Accessories
16
90
High pressure control
Sensor solar collector
Sensor domestic water
Sensor heating element
Sensor evaporator
Sensor before evaporator
Fan Blue
Black
Brown
Brown
Blue
Power supply 1x230V 50Hz
max. safety fuse 16 Amp
Heating element 1,0 kW
Overheat thermos-
tat 90°C

20 -We reserve the right to make technical changes - 830130GB/150111